Pumping rig



Patented Apr. l, 1924.

UNITED STATES A PATEN'v GFIQEA FRANK H. HALL, OF'BRADFORD, PENNSYLVANIA. n

PUMPING RIG.

Application filed March 9, 1923. Serial No. 624,036.

the polish or sucker rod of an oil well pump.V

The primary object of my invention is to provide a simple and effective arrangement for operating the polish or sucker rod of an oil well pump through the lmedium of the horizontal pull1 line ordinarily employed", the arrangement 'or rig inthe ypresent instancer providing for a direct vertical movement of the sucker rod to obviateany lateral vibration of the same and thereby prevent uneven wear on the gland` or stuifing-box through which said sucker rod passes and consequent loss of oil.

With this primary object in view my invention consists in providinga supporting frame disposed at one sidek of the oil well casing and inclined towards the polish or sucker rod with two pairs of sheaves mounted on transverse shafts at thev upper and lower ends of said supporting frame and over which the cables or pull lines pass for connection with a cross-head on the sucker rod, the arrangement thereby insuring a direct pull on the upstroke of the pump; all as hereinafter fully described and more specifically pointedY out in the appended claims.

In the accompanying drawings:

Fig.` 1 is a side elevation of a pumping rig constructed in accordance `with my in-y vention.

Fig. 2 is arearelevation, parts of the platform and brace-rods of thek supporting frame being broken away;

Fig. 3 is a detail sectional View of the upper end Lof the supporting frame, and

Fig. /lisf a side elevation of a modification showing the employment of segmentsheaves.

Lilie numerals of reference indicate likeI parts in all the figures ofthe drawings.

In the present instance I have show-n my improved pumping rig applied to an oil well of a conventional type, having the usual casing head 10 through which the well tubing or an extension thereof, as-11, passes,

the latter being provided at its upper end with the ordinary gland or packing-box 12 for the polish or sucker-rod 13. ,The sucker-rod extends into the well forfconnection with the pump (not shown),"a-nd for the operation of the same is provided with a cross-head 14 to the ends ofv which the pull lines are connected and operated as hereinafterv described.

In carryingv out my invention I first build around the well casingy 10 a suitable platform 15 for supporting the pumping rig, the platform resting' on cement columns 16 and comprising a pair of Lbeams 17 and floor-boards bridging said beams.

The pumping rig comprises a pair of parallel uprights 18 18 rising from bearing brackets 18a on the platform at opposite sides of the well casing and disposed at a slight inclination towards the polish or sucker-rod 13, with a pair of sheaves 23 atk the upper end of saidv uprights and a pair `of sheaves 24 at the lower end thereof, said sheaves being mounted on the ends of transverse shafts 21 and 22, respectively, The transverse shaft 21 at the upper end of the pumping rig is supported in bearings 19 formed on the uprights 18, while the transverse shaft 22 is mounted in the bearing brackets 18a and formsvthe pivotal support for said uprights. The supporting frame for thesheaves is braced from its upper end by rods 26 extending rearwardly and bolted to the platform as shown, each bracerod being-in two sections with an interposed turn-buckle 27 for adjusting the inclination of the supporting frame or rig to properly position the sheaves 23 with respect to the polish or 'sucker rod whereby the pulling lines 25 from said sheaves will depend in a true vertical line to the ends of the crossheadvlll. It may be here noted .that the pull lines or cables 25 from a suitable'source of power extend under the sheaves` 24; up to and over the sheaves-23 from the rear of the latter;V

Thepull lines; are attached to tl'ieends of the crossfhead by means of i eye-bolts 28, and in connection with said eyeboltsz- I? preferY to useAv small springs 29. in-

terposed between the adjusting. nuts 30 and iol provided with a recess to receive the rod and a clamping-plate 14a, as clearly illustrated in Fig., 2 of the drawings.

The brace-rods are connected to the upper end of the supporting frame or upright members thereof as shown in Fig. 3, in which the looped ends of said rods are placed over the reduced inner ends 19EL of the bearings 19, and to protect the shaft 21, as Well as space the uprights apart, a sleeve 31 is used, impinging at its ends against the looped ends of the brace-rods. The parts constituting the upper part of the rig may be further braced by a cross-bar or shaft 36 extending through and secure to said uprights 18. l

In the operation of the pumping rig constructed in accordance with my invention, and hereinbefore described, the lifting or working stroke of the polish or sucker-redis effected by pulling on the lines orvcables 25 and these cables are guided or directed by theV sheaves under and over which they pass so as to give a direct upward or vertical pull on the sucker-rod, and on the downward stroke of the pump said sucker-rod is also guided in a vertical line thereby preventing any uneven wear on the gland or packing box 12. In other words, the operation of the polish or sucker rod is straight Vup and down, and as there will be no lateral vibration and consequently no uneven wear on the gland loss of oil at this point will be prevented.

It will be readily seen, therefore, that my improved pumping rig provides a very simple and eifective operating device for the polish rod which can be set up at comparatively little expense, and although I have shown it applied in connection with an oil well pump it will be understood that it may be applied to a pump for other purposes. Furthermore, it will be understood, also, that modifications or changes may be made in the details of construction without departing from the spirit of my invention or scope of the appended claims.

A modification of the means for applying a direct vertical movement to the polish or sucker rod is illustrated in Fig. 4 of thev drawings in which the same supporting frame is used, the pivoted uprights 18 being swung backward a short distance, and in this instance instead of connecting the pull lines directly to the cross-head 14 after passing them under and over the sheaves 24 and 23 respectively I employ interposed segment sheaves 35 which are mounted on the ends of the cross-bar or shaft 36 and to which the pull lines 25 are connected after passing over smallsheaves 37 mounted on the ends of the upper shaft 21 in place of the sheaves 23, said segment sheaves being connected by short cables 38 to the crosshead 14. The cables 38 work in the grooved thereto, of an operating device or rig comprising a pair of uprights pivoted in bearing brackets at their lower ends, shafts at the upper and lower ends of said uprights, a pair of sheaves mounted on the upper shaft in alinement with the ends of the cross-head,

Vand sheaves mounted on the lower shaft in alinement with the aforesaid sheaves, together with the pull lines extending under the lower sheaves and over the upper sheaves for attachment to .the ends of the cross-head to impart avertical movement to the polish or sucker rod.

2. In combination with the polish or sucker rod of aV pump and a cross-head attached to said sucker-rod, of an operating device or rig comprising aV pair of uprights at a slight inclination, brace rods connected to the upper ends of the uprights, shafts at the upper and lower ends of said uprights, respectively, a pairof sheaves mounted on the upper shaft in vertical alinement with respect to the ends of the cross-head, and a pair of sheaves mounted on the lower shaft in alinement with the aforesaid sheaves, together with pull lines extending under the lower sheaves and over the upper sheaves for attachment to the ends of the cross-head to inpart a vertical movement to the sucker ro 3. A pumping rig for oil wells in combination with the polish or sucker rod comprising a pair of uprights inclined towards the sucken rod and'ha-ving journal bearings at the upper ends thereof and pivoted in bearing brackets at their lower ends, transverse shafts journaled in said bearings, a pair of sheaves mounted on the upper shaft and disposed at oppositesides of the sucker rod, and a pair of sheaves mounted on the lower shaft in alinement with the aforesaid sheaves; together with a cross-head attached to the sucker rod with its ends in vertical alinement with the upper pair of sheaves, and eye-bolts in the ends of the cross-head with interposed springs, the pull lines eX- tending under the lower sheaves and over. the upper sheaves and attached to the eyebolts to impart a vertical movement to the sucker rod.

4. A pumping rig for oil wells comprising a platform around t-he well casing, a. pair of uprights secured to the platform at one side of said casing and rising therefrom Lacasse at a slight inclination towards the sucker rod, means for bracing the uprights, a pair of sheaves at the upper end of the uprights and disposed at opposite sides of the sucker rod, and a pair of sheaves at the lower end of said uprights; together with a cross-head attached to the sucker rod with its ends in vertical alineinent with the sheaves at the upper end of the rig, and yielding connections at the ends of the cross-head for attachment of the pull lines thereto, the latter passing under the lower sheaves and over the upper sheaves depending from the latter in vertical line vto the cross-head.

5. In combination with an oil well having a casing head, well tubing, packing-box and sucker rod, of a pumping rig comprising uprights at one side of the casing and inclined slightly towards the sucker rod, shafts journalled in the upper and lower ends of said uprights, a pair of sheaves mounted on the upper shaft at opposite sides of the sucker rod, a pair of sheaves mounted on the lower shaft in alinement with the aforesaid sheaves, and brace rods extending from the upper ends of the uprights and each conthe cross-head for attachment of theV pull lines to said cross-head, the pull lines extending under the lower'sheaves and over the upper sheaves from which latter they depend in a true vertical line to the aforesaid eye-bolts to impart a vertical movement to the sucker rod.

6. A pumping rig for oil wells comprising bearing brackets supporting a transverse shaft, uprights pivoted at their lower ends on said shaft and having shaft bearings at their upper ends and intermediate their ends, transverse shafts supported in said bearings respectively, and adjustable bracerods connected to the upper ends of the pivoted uprights; together with sheaves mounted on the transverse shafts to cooperatey with the pull lines, and means for connecting the pull lines to the sucker rod of the pump.

FRANK H. HALL. 

